TM-5-4210-249-13-P-1

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 1 OF 4

TM-5-4210-249-13-P-1 - Page 1050 of 1188

TM 5-4210-249-13&P-1

0119-22

DRAFT

0119

TFFT04023

WARNING

ICON 66

Air lines may be under pressure when shutoff control valve manifold is operated.

If

under pressure and air lines are disconnected, air lines may whip around and cause

injury to personnel.

Caution should be exercised when operating control valve with

air lines disconnected.

Failure to comply may cause injury to personnel.

NOTE

Air pressure is checked by disconnecting air lines at driver side tank-to-pump valve and

observing air pressure escaping from air lines.

Air will escape from blue air line when

TANK TO PUMP switch is put to on position (WP 0004), and escape from red air line when

TANK TO PUMP switch is put to off position (WP 0004).

System air pressure may drop

below 85 psi (586 kPa) during this procedure.

Step 29.

Disconnect red and blue air lines from two elbows.

While an assistant puts cab or pump

operator’s panel TANK TO PUMP switch to on position (WP 0004), check if air pressure

is present at blue air line.

If there is air pressure, replace driver side tank-to-pump valve (WP 0493).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION